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java.lang.NullPointerException: 	at java.io.Writer.write(Writer.java:140)	at com.icesoft.faces.util.DOMUtils.printNode(DOMUtils.java:182)	at com.icesoft.faces.util.DOMUtils.printNode(DOMUtils.java:168)	at com.icesoft.faces.util.DOMUtils.printNode(DOMUtils.java:168)	at com.icesoft.faces.util.DOMUtils.printNode(DOMUtils.java:168)	at com.icesoft.faces.util.DOMUtils.printNode(DOMUtils.java:168)	at com.icesoft.faces.util.DOMUtils.printNode(DOMUtils.java:168)	at com.icesoft.faces.util.DOMUtils.printNode(DOMUtils.java:168)	at com.icesoft.faces.util.DOMUtils.printNode(DOMUtils.java:168)	at com.icesoft.faces.util.DOMUtils.printNode(DOMUtils.java:168)	at com.icesoft.faces.util.DOMUtils.printNode(DOMUtils.java:168)	at com.icesoft.faces.util.DOMUtils.printNode(DOMUtils.java:168)	at com.icesoft.faces.util.DOMUtils.printNode(DOMUtils.java:168)	at com.icesoft.faces.util.DOMUtils.printNode(DOMUtils.java:168)	at com.icesoft.faces.util.DOMUtils.printNode(DOMUtils.java:168)	at com.icesoft.faces.util.DOMUtils.printNode(DOMUtils.java:168)	at com.icesoft.faces.util.DOMUtils.printNode(DOMUtils.java:119)	at com.icesoft.faces.util.DOMUtils.printNode(DOMUtils.java:103)	at com.icesoft.faces.context.NormalModeSerializer.serialize(NormalModeSerializer.java:61)	at com.icesoft.faces.context.BridgeFacesContext$SaveCurrentDocument.serialize(BridgeFacesContext.java:924)	at com.icesoft.faces.context.DOMResponseWriter.endDocument(DOMResponseWriter.java:191)	at com.icesoft.faces.facelets.D2DFaceletViewHandler.renderResponse(D2DFaceletViewHandler.java:285)	at com.icesoft.faces.application.D2DViewHandler.renderView(D2DViewHandler.java:159)	at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:110)	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)	at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)	at com.icesoft.faces.webapp.http.core.JsfLifecycleExecutor.apply(JsfLifecycleExecutor.java:19)	at com.icesoft.faces.context.View$2$1.respond(View.java:48)	at com.icesoft.faces.webapp.http.servlet.ServletRequestResponse.respondWith(ServletRequestResponse.java:201)	at com.icesoft.faces.context.View$2.serve(View.java:77)	at com.icesoft.faces.context.View.servePage(View.java:149)	at com.icesoft.faces.webapp.http.core.SingleViewServer.service(SingleViewServer.java:52)	at com.icesoft.faces.webapp.http.common.ServerProxy.service(ServerProxy.java:11)	at com.icesoft.faces.webapp.http.servlet.MainSessionBoundServlet$4.service(MainSessionBoundServlet.java:149)	at com.icesoft.faces.webapp.http.common.standard.PathDispatcherServer.service(PathDispatcherServer.java:24)	at com.icesoft.faces.webapp.http.servlet.BasicAdaptingServlet.service(BasicAdaptingServlet.java:16)	at com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:23)	at com.icesoft.faces.webapp.http.servlet.SessionDispatcher.service(SessionDispatcher.java:53)	at com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:23)	at com.icesoft.faces.webapp.http.servlet.MainServlet.service(MainServlet.java:131)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)	at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)	at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)	at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)	at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)	at java.lang.Thread.run(Thread.java:619)